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相关概念视频

Entropy02:39

Entropy

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Salt particles that have dissolved in water never spontaneously come back together in solution to reform solid particles. Moreover, a gas that has expanded in a vacuum remains dispersed and never spontaneously reassembles. The unidirectional nature of these phenomena is the result of a thermodynamic state function called entropy (S). Entropy is the measure of the extent to which the energy is dispersed throughout a system, or in other words, it is proportional to the degree of disorder of a...
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Entropy01:18

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The first law of thermodynamics is quantitatively formulated via an equation relating the internal energy of a system, the heat exchanged by it, and the work done on it. A quantitative formulation of the second law of thermodynamics leads to defining a state function, the entropy.
When an ideal gas expands isothermally, the disorder in the gas increases. From the molecular perspective, the gas molecules have more volume to move around in.
Consider an infinitesimal step in the expansion, which...
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Standard Entropy Change for a Reaction03:00

Standard Entropy Change for a Reaction

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Entropy is a state function, so the standard entropy change for a chemical reaction (ΔS°rxn) can be calculated from the difference in standard entropy between the products and the reactants.
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Vision01:24

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Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.
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Entropy and Solvation02:05

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The process of surrounding a solute with solvent is called solvation. It involves evenly distributing the solute within the solvent. The rule of thumb for determining a solvent for a given compound is that like dissolves like. A good solvent has molecular characteristics similar to those of the compound to be dissolved. For example, polar solutions dissolve polar solutes, and apolar solvents dissolve apolar solutes. A polar solvent is a solvent that has a high dielectric constant (ϵ...
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Entropy within the Cell01:22

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A living cell's primary tasks of obtaining, transforming, and using energy to do work may seem simple. However, the second law of thermodynamics explains why these tasks are harder than they appear. None of the energy transfers in the universe are completely efficient. In every energy transfer, some amount of energy is lost in a form that is unusable. In most cases, this form is heat energy. Thermodynamically, heat energy is defined as the energy transferred from one system to another that...
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相关实验视频

Updated: Jan 31, 2026

A Standardized Obstacle Course for Assessment of Visual Function in Ultra Low Vision and Artificial Vision
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光诱导为安全视觉的安全视觉.

Juhyung Seo1, Seungme Kang1, Chaehyun Kim2

  • 1Department of Electronic Engineering, Hanyang University, Seoul, Republic of Korea.

Advanced materials (Deerfield Beach, Fla.)
|January 29, 2026
PubMed
概括
此摘要是机器生成的。

一个新的基于光的真随机数发生器 (PS-TRNG) 使用光物质相互作用来创建高随机数. 这项技术可以实现安全的图像身份验证,甚至可以检测人工智能生成的操作.

关键词:
图像安全 图像安全摄影探测器是一种光检测器.摄影尖峰 (photospike) 是一个随机电子产品 随机电子产品真正的随机数发生器

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相关实验视频

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A Standardized Obstacle Course for Assessment of Visual Function in Ultra Low Vision and Artificial Vision

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科学领域:

  • 材料科学 材料科学 材料科学
  • 光电学是指光电子产品.
  • 信息安全 信息安全

背景情况:

  • 真正随机数生成器 (TRNG) 对于安全的数据加密和身份验证至关重要.
  • 现有的TRNG通常面临,统计质量或长期稳定性方面的局限性.
  • 开发新奇的物理现象,用于强大的随机数生成是一个正在进行的研究领域.

研究的目的:

  • 开发一个基于光的真随机数发生器 (PS-TRNG),利用光物质相互作用和电荷捕获.
  • 为了研究铜酸盐 (CuV2O6) 纳米结构和二氧化 (SnO2) 量子点用于随机数生成的潜力.
  • 在移动系统中实现PS-TRNG用于图像真实性验证.

主要方法:

  • 将CuV2O6纳米结构与SnO2量子点层集成,以创建一个PS-TRNG设备.
  • 在光脉冲列车下利用概率的捕捉-解捕获动态来产生随机的光峰电流.
  • 开发一个带有定制电路板的移动平台,用于嵌入随机数字到图像数据中.
  • 使用NIST统计测试套件测试随机数输出,并评估图像修改检测能力.

主要成果:

  • PS-TRNG 显示出高度,并使多级 (二次) 随机数生成成为可能.
  • 输出实现了接近理想的统计性质 (33.30%的统一性,33.28%的哈明间距离),并通过了所有15个NIST测试.
  • 集成系统成功验证了图像的真实性,检测了复杂的AI生成的修改.
  • 该设备表现出卓越的长期稳定性,运行超过200万个周期,可靠性超过460天.

结论:

  • 基于Photospike的真随机数生成器提供了一个强大的,稳定的高质量的随机数源.
  • 基于硬件的图像真实性验证中,PS-TRNG技术是有效的,即使对先进的AI操纵也有效.
  • 这种方法为安全的数据生成和数字内容保护提供了有希望的解决方案.